Platform-gear for wagons



(No Model.)

' C. H. PANGBORN.

PLATFORM GEAR FOR'WAGONS.

,225. Patented Sept 4; 1883,.

Invent-02' UNITED STATES CHARLES H. PANGBORN, OF BUCHANAN, MICHIGAN.

PLATFORM-GEAR FOR WAGONS.

SPECIFICATION forming part. of Letters Patent No. 284,225, dated September 4, 1883,

Application filed January 10, 1883. (No model.)

ment in Wagon-Trusses, of which'the follow:

ing is a specification.

The object of my invention is to so construct a wagon-truss for supporting the fifth-wheel that will be cheap, li ght, and sufficiently. strong to resist flexure under stress of a heavy load; and it consists of an arched truss-frame carrying a fifth-wheel, the whole being strengthened and .supported by longitudinal and transverse supporting-plates, as hereinafter described.

Inorder to aid others skilled in the art to which my invention belongs to make and use it, I will proceed to describe its construction and operation with reference to the several drawings, forming a part of this specification, in whichn Figure 1 is a top perspective view of my in; vention. Fig. 2is an inverted plan of the same. Fig. 3 is an enlarged detached perspective of a portion of my invention. Fig. 4: is a sectional view through the fifth-wheel B and side trestle, a, and an end View of the central crosstie, 'v, with bolt securing the parts together,

as'hereinafter described.

. mediate transverse bar, 11.

wheel.

under the arc of the transverse trestle a. (See In. the drawings, Fig. l, 6' represents the usual spring-block, and need not be described. Attached thereto, and diverging from the spring-block, I employ three trestlesfa a a. The side trestles, as they. extend from the spring-block, are gradually spread. The three trestles a a a are united to a transverse truss, a, thus giving the trestles an A-shaped form. Passing under the trestles a a a is an intera are made arching, so as to place the fifthwheel B upon an elevation, which also prevents the end of the platform or trestles from coming in contact with the wagon-box in turning around and the like. The fifth-wheel has four bearings upon the structure, andrbeing equally divided adds great strength to the One endof the central trestle passes Fig.1.) I attachto the under side of the trestles a a a metal supporting straps or bars d dd. (See Figs. 1, 2, and 3.) These straps are bolted to the spring-block e and transverse bar a and trestles a a a. (See Fig. 2.) The ends of the metal straps cl (1 d are bent at right angles, thus abutting against the vertical sides of the The trestles a a a spring-block and trestle a, as shown in Figs. 1 and 3. Passing under the bar a is a similar strap, c, in which the right angle parts 0 meet the projecting ends of said trestle-bar.

The intermediate bar, 22, crosses between the trestles a a a and metal bars d aid, as shown in Figs. 1 and 4. The bolt f passes through the wheel B, bars a and o, and metal bar d, as shown in Fig. 4. In the drawings, Fig. 1, 0. represents the usual kingbolt plate about which the parts turn. M

It is obvious, from the construction of the parts herein described, that in order to settle or sag the fifth-wheel B, mounted upon the arched trestles, said trestles must be straightened out; also that they are held in their arched position by the straight metal tie-bars d d d and 0, being bolted. to the same, and, further, that said trestles supporting the wheel are prevented from spreading by the rightangle braces -c c of the supporting-bars. The arched portions of my trestle are made of wood, being light and cheap; or the trestle may be constructed wholly ofmetal.

' Having thus described my invention fully, what I claim as new, and desire Letters Pat ent for, isa y y 1. In a wagon-truss, the combination of the arched trestles a a a, the two outer ones joining the transverse trestlea, with the central trestle passing under the arc of the transverse trestle, with the horizontal strap 0, passing under the central trestle supporting the same, with the end portions 0" c bent upward, thus abutting against the ends of the transverse trestle, substantially as and for the purposes set forth. p

2. The combination of the spring block, with arched trestles attached thereto and to the transverse trestle, as'specified, the transverse bar 11, under the trestles a a a, with horizontal supporting-straps d d d, being socured to the spring-block, and trestle a, passing under and supporting the transverse'bar o," and the transverse horizontal strap 0, pass ingunder the trestle a, as specified, having the 100 

